Influence of the surface mechanical pulsed treatment on the oxidation of Fe – 0.2C – 13Cr – 0.3Si steel in lead melts

We study the influence of mechanical pulsed treatment (MPT-1) on the corrosion resistance of Fe – 0.2C – 13Cr – 0.3Si steel in a lead melt containing 1.3 · 10 – 3 wt.% of oxygen at a temperature of 550°C for 1000 h. It is shown that the MPT promotes the formation of micro- and macrodefects in the su...

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Bibliographic Details
Published in:Materials science (New York, N.Y.) N.Y.), 2009-09, Vol.45 (5), p.726-733
Main Authors: Tsisar, V. P., Kyryliv, V. I., Eliseeva, O. I., Voloshyn, V. A.
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Diffusion
Grain boundaries
Iron
Materials Science
Melts
Oxidation
Oxidation resistance
Oxide coatings
Solid Mechanics
Structural Materials
Structural steels
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Summary:We study the influence of mechanical pulsed treatment (MPT-1) on the corrosion resistance of Fe – 0.2C – 13Cr – 0.3Si steel in a lead melt containing 1.3 · 10 – 3 wt.% of oxygen at a temperature of 550°C for 1000 h. It is shown that the MPT promotes the formation of micro- and macrodefects in the subsurface zone of the specimens, which intensifies the process of oxidation of steel. The oxidation resistance of steel after MPT-2 and MPT-3 (with adding aluminum and silicon) is attained as a result of the formation of a hardened zone with nanocrystalline structure and large lengths of grain boundaries intensifying the diffusion of chromium into the oxide films.
ISSN:1068-820X
1573-885X
DOI:10.1007/s11003-010-9236-x